Home / 426,020.10-638,252.55-259,613.70

Finding the Fourth Proportional to 426,020.10, 638,252.55 and 259,613.70

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Solution

The fourth proportional to 426,020.10, 638,252.55 and 259,613.70 is: 388,946.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,020.10 : 638,252.55 = 259,613.70 : x
  2. Step 2: Convert to fraction form
    426,020.10/638,252.55 = 259,613.70/x
  3. Step 3: Cross multiply
    426,020.10x = 638,252.55 × 259,613.70
  4. Step 4: Simplify right side
    426,020.10x = 165,699,106,039.94
  5. Step 5: Solve for x
    x = 165,699,106,039.94/426,020.10
  6. Step 6: Final answer
    x = 388,946.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.